InfluxDB (Database service)

Last updated 3rd June 2021

Objective

InfluxDB is a time series database optimized for high-write-volume use cases such as logs, sensor data, and real-time analytics.

It exposes an HTTP API for client interaction. See the InfluxDB documentation for more information.

Supported versions

Grid
1.2
1.3
1.7
1.8

Relationship

The format exposed in the $PLATFORM_RELATIONSHIPS environment variable:

{
    "service": "influxdb18",
    "ip": "169.254.234.110",
    "hostname": "duqbjfn7t4dwr2fi2o7bsvqafy.influxdb18.service._.eu-3.platformsh.site",
    "cluster": "rjify4yjcwxaa-master-7rqtwti",
    "host": "influxdb.internal",
    "rel": "influxdb",
    "scheme": "http",
    "type": "influxdb:1.8",
    "port": 8086
}

Usage example

In your .platform/services.yaml:

timedb:
    type: influxdb:1.8
    disk: 256

In your .platform.app.yaml:

relationships:
    influxtimedb: "timedb:influxdb"

You will need to use influxdb type when defining the service

```yaml

.platform/services.yaml

service_name: type: influxdb:version disk:256 ```

and the endpoint influxdb when defining the relationship

```yaml

.platform.app.yaml

relationships: relationship_name: “service_name:influxdb” ```

Your service_name and relationship_name are defined by you, but we recommend making them distinct from each other.

You can then use the service in a configuration file of your application with something like:

<?php
// This assumes a fictional application with an array named $settings.
if (getenv('PLATFORM_RELATIONSHIPS')) {
    $relationships = json_decode(base64_decode($relationships), TRUE);

    // For a relationship named 'influxtimedb' referring to one endpoint.
    if (!empty($relationships['influxtimedb'])) {
        foreach ($relationships['influxtimedb'] as $endpoint) {
            $settings['influxdb_host'] = $endpoint['host'];
            $settings['influxdb_port'] = $endpoint['port'];
            break;
        }
    }
}

Exporting data

InfluxDB includes its own export mechanism. To gain access to the server from your local machine open an SSH tunnel with the Web PaaS CLI:

webpaas tunnel:open

That will open an SSH tunnel to all services on your current environment, and produce output something like the following:

SSH tunnel opened on port 30000 to relationship: influxtimedb

The port may vary in your case. Then, simply run InfluxDB's export commands as desired.

influx_inspect export -compress

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